Pioneer A-209 서비스 매뉴얼 - 페이지 27

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6. ADJUSTMENT

6.1 IDLE CURRENT ADJUSTMENT

¶ CAUTION : Heatsinks' (Q323–Q326) DC level is equal to +B or -B.

Don't touch them or you will be electric shocked.

1. Connect the measuring instrument as shown in Fig.6-1. (R373 or R374)

2. Turn the POWER switch to ON.

3. Adjust VR301 (VR302) so that the voltage between both sides of R373 (R374) becomes 10mV ± 1mV.

4. Ages for 5 minutes.

5. Adjust VR301 (VR302) so that the voltage between both sides of R373 (R374) becomes 11mV ± 1mV.

DC Voltmeter

R373

R375

Heat Sink

VR301

Heat Sink

Fig.6-1 Adjustment Method

AF ASSY

SIDE A

Heat Sink

R374

R376

VR302

Heat Sink

CN202

A-209R, A-209